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S39277 Stainless Steel vs. AISI 314 Stainless Steel

Both S39277 stainless steel and AISI 314 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 84% of their average alloy composition in common.

For each property being compared, the top bar is S39277 stainless steel and the bottom bar is AISI 314 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 28
45
Fatigue Strength, MPa 480
210
Poisson's Ratio 0.27
0.28
Reduction in Area, % 57
57
Shear Modulus, GPa 80
78
Shear Strength, MPa 600
410
Tensile Strength: Ultimate (UTS), MPa 930
590
Tensile Strength: Yield (Proof), MPa 660
230

Thermal Properties

Latent Heat of Fusion, J/g 300
330
Maximum Temperature: Corrosion, °C 450
440
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1460
1380
Melting Onset (Solidus), °C 1410
1340
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 13
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 23
25
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 4.2
4.3
Embodied Energy, MJ/kg 59
62
Embodied Water, L/kg 180
190

Common Calculations

PREN (Pitting Resistance) 43
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
210
Resilience: Unit (Modulus of Resilience), kJ/m3 1070
130
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 33
21
Strength to Weight: Bending, points 27
20
Thermal Diffusivity, mm2/s 4.2
3.9
Thermal Shock Resistance, points 26
14

Alloy Composition

Carbon (C), % 0 to 0.025
0 to 0.25
Chromium (Cr), % 24 to 26
23 to 26
Copper (Cu), % 1.2 to 2.0
0
Iron (Fe), % 56.8 to 64.3
46.7 to 56.5
Manganese (Mn), % 0 to 0.8
0 to 2.0
Molybdenum (Mo), % 3.0 to 4.0
0
Nickel (Ni), % 6.5 to 8.0
19 to 22
Nitrogen (N), % 0.23 to 0.33
0
Phosphorus (P), % 0 to 0.025
0 to 0.045
Silicon (Si), % 0 to 0.8
1.5 to 3.0
Sulfur (S), % 0 to 0.0020
0 to 0.030
Tungsten (W), % 0.8 to 1.2
0